Type of Service (TOS)

Mon May 10 21:31:20 UTC 2004

Hi,

Do you know by default if the routers pass the TOS bits?

regards,
/vicky

Scott McGrath wrote:

> 
> The answer is it depends.  routers _usually_ honor the TOS bits unless
> they are configured to clear or rewrite them.  We use the TOS bits for
> designating traffic classes so in some cases we rewrite the TOS bits set
> by the host so in your case we would modify the TOS bits.
> 
>                             Scott C. McGrath
> 
> On Mon, 10 May 2004, Vicky Rode wrote:
> 
> 
>>Hi there,
>>
>>Say if I had a qos appliance installed on networks between a lan and a
>>wan box would the qos policies be carried across wan end points (point
>>to point connection)? In other words, will the router retain the TOS
>>bits across to the other side of the wan connection to provide QoS-style
>>priority for the packets or will it clear the TOS bits? BTW, the other
>>side of the wan connection also has the qos appliance sitting between a
>>lan and a wan box.
>>
>>Just so that I'm clear, I'm not talking about an upstream neighbor being
>>an ISP connection  which I know they will likely ignore the TOS bits
>>unless I pay them extra for the feature. The above scenario is a point
>>to point connection to a remote site.
>>
>>
>>Any insight will be appreciated.
>>
>>
>>regards,
>>/vicky
>>
> 
> 